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Polyend MESS Multi-effect Step Sequencer Pedal , $599.00 - Add to Cart Skip to Product Information

Polyend MESS Multi-effect Step Sequencer Pedal

Multi-FX Pedal with 1,000 Presets, 120+ FX, 4 Independent FX Tracks, 16-step Grid Pad, and MIDI I/O
Polyend MESS Multi-effect Step Sequencer Pedal
Polyend MESS Multi-effect Step Sequencer Pedal

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Polyend MESS Multi-effect Step Sequencer Pedal
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More Than a Traditional Multi-effects Pedal

This article was Written By

Our Product Research Team

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At Sweetwater, we understand the appeal of a traditional stompbox, and the Polyend MESS provides all the convenience of analog stompbox control with the expansive capability of digital effects libraries. Fully equipped with a 16-step grid pad, the MESS, or multi-effect step sequencer, is a real-time sequencer and editor with hands-on controls that encourage exploration and experimentation. You can build and save up to 1,000 presets, from straightforward instrument effects to experimental polyrhythmic patterns that evolve as you play. Set up any of the more than 120 effects in four independent tracks with the ability to stack and manipulate each to your desired parameters. With the Polyend MESS outfitting your rig with finite control and maximum customization, static presets are a thing of the past.

Created for any performance

Polyend crafted more than another multi-effects pedal with the MESS supplying unprecedented levels of programmable, performative sound design to anyone creating music. Whether you’re a guitarist expanding your pedalboard, a synthesist looking for creative new sounds, or a sound designer expanding your control, the MESS offers something to love. This powerhouse effects pedal integrates with virtually any setup, whether you’re running into a DAW or straight to a speaker.

Customizable control

The MESS provides four independent tracks that can each stack, sequence, and control the more than 120 effects, with parameters to control the nuances of each effect. You can choose from analog-style modulation and time-based effects or select one of many innovative spectralizers that supply new uses for granular engines. The best part? Every feature and effect can be adjusted right on the pedal itself with an easy-to-read, full-color display; 16 customizable pads; and Settings, Input level, Preset selection, Macro, Mix, and Tempo adjustment controls.

Effects for every occasion

The MESS opens up a new world of possibilities by blending traditional sound shaping with generative and performance power. You can create sequences for entirely new textures that evolve in time, or switch off sequencing and use MESS as a straightforward multi-effects pedal. Either way, you can access countless sonic possibilities with everything from multimode reverb with five different modes and 25 submodes to granular bursts that transform audio in real time and over 25 submodes of modulation. On top of that, you get multiple variations of other effects, including delays, micro-looping, particle samplers, spectralizers, repitching, and more.

Polyend MESS Features:

  • Multi-FX processor pedal for any instrument or creator
  • Access to 120+ FX with multiple variations of each
  • Full onboard control with 6 knobs, 16-step grid pad, and full-color display
  • Save up to 1,000 presets for any musical occasion
  • 4 independent tracks that each allow individual FX stacking and manipulation
  • Use with a DAW or run straight to a speaker
  • Stereo input with individual left and right outputs to split tracks
  • Expression pedal input
  • MIDI input and output
  • USB-C and microSD ports for even more compatibility

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.